Re: [6.2 regression][bisected]discard storm on idle since v6.1-rc8-59-g63a7cb130718 discard=async

Christoph Hellwig
2023-04-05T06:18:59Z

On Tue, Apr 04, 2023 at 02:15:38PM -0400, Chris Mason wrote:
> It seems like a good time to talk through a variations of discard usage
> in fb data centers. We run a pretty wide variety of hardware from
> consumer grade ssds to enterprise ssds, and we've run these on
> ext4/btrfs/xfs.

Remember what you guys call consumer grade is the top of the shelve
consumer grade SSDs, or in fact low-end enterprise ones that are based
on the latest and greatest top shelve SSDs with firmware specifically
tweaked for you. That is a whole differnet level from random crappy
no-name SSD from 5 years ago.